Add _count paramater support in search command.

[hossenlopp]

Summary

Add support for _count parameter for search operations.

Note: I've left the loadBundles bundle loader script piece in for now, but I think we should potentially remove that since other functionality has been added that takes its place. We may want to keep it for the moment ahead of the connectathon in case it's useful (maybe we pull it off into another branch? or maybe just make sure the commit isn't deleted?).

New behavior

The '_count' parameter can be used to limit the number of resources pulled from a search (default 50), while page can be used to indicate what page of search results (default 1st page).

Code changes

• README.md update
• dbOperations.ts - update to findResourcesWithQuery and findResourceElementsWithQuery to use pagination and appropriately aggregate results with an aggregation pipeline (necessary to get the count and results in the same request)
• requestSchemas.ts - update to allow '_count' and 'page' parameters
• LibraryService.ts and MeasureService.ts - updates to create pagination links
• bundleUtils.ts - createPaginationLinks function
• queryUtils.ts - handle creating limit and skip values in mongo query for use in pagination
• Added _count/page tests and updated queryUtils test to match new functionality

Should probably be removed:

• loadBundles script and package.json update to run it

Testing guidance

• npm run check in service folder
• Use insomnia to execute search queries with various '_count', 'page', and lack thereof

[elsaperelli]

Looking good! Just some small comments and one potential issue with the Library endpoint when the database is populated with bundles from the may-2024-connectathon repository.

[elsaperelli]

One small comment!

[elsaperelli]

🥳